Next, you should use this boundary ailment and resolve for Fourier's 2nd Law to obtain The inner temperature distribution. Assuming no inner heat era, the answer is ρ C p ( ∂ T ∂ t + v → ▽ T ) = k ▽ T displaystyle rho C_ p ( partial T around partial t + overrightarrow v bigtriangledown T)=kbigtriangledown T 2) The wire is equipped on